The Voice authenticator initiates a call to your registered phone number. The phone call requests you to specify the PIN for authentication. When you try to authenticate on an application, the recorded PIN is compared with the actual PIN. If both PINs match, you are authenticated successfully.
To authenticate using the Voice method, perform the following steps:
Check your mobile phone. You must receive a phone call.
Answer the phone call, listen to the request.
Specify your PIN followed by the hash symbol (#) in the dial pad of your mobile phone.
If the PIN matches with the enrolled PIN, the Voice authentication is successful.